Lu  search
USElutetium
Lu/Hf  search
UFHf/Lu
RTabsolute age
 isotope ratios
 hafnium
 lutetium
SNIsotopic ratio used in age determination.
Luanda Angola  search
BTAfrica
 .Central Africa
 ..Angola
 ...Luanda Angola
UFLoanda Angola
SNDistrict including the city in NW Angola.
Lubbock County Texas  search
BTUnited States
 .Texas
 ..Lubbock County Texas
NTLubbock Lake
 Lubbock Texas
SNNW Texas.
Lubbock Lake  search
BTUnited States
 .Texas
 ..Lubbock County Texas
 ...Lubbock Lake
RTarchaeology
SNArchaeological site in W Texas. Added to Thesaurus in 1989.
Lubbock Texas  search
BTUnited States
 .Texas
 ..Lubbock County Texas
 ...Lubbock Texas
SNCity in NW Texas.
Luben Poland  search
USELubin Poland
Lubin Legnicki  search
BTEurope
 .Central Europe
 ..Poland
 ...Lubin Legnicki
RTLubin Poland
SNRegion in and around cities of Lubin and Legnica in SW Poland.
Lubin Poland  search
BTEurope
 .Central Europe
 ..Poland
 ...Lubin Poland
UFLuben Poland
RTLubin Legnicki
SNCity in central Legnica, SW Poland.
Lublin Poland  search
BTEurope
 .Central Europe
 ..Poland
 ...Lublin Poland
NTLublin Upland
 Lukow Poland
SNProvince and city in E Poland.
Lublin Upland  search
BTEurope
 .Central Europe
 ..Poland
 ...Lublin Poland
 ....Lublin Upland
SNSW Lublin.
Lucania  search
BTEurope
 .Southern Europe
 ..Italy
 ...Lucania
RTBasilicata Italy
 Irpinia earthquake 1980
 Campania Italy
 Salerno Italy
SNAncient district in S including Basilicata autonomous region and part of Salerno Province of Campania. Indexed with autonomous regions as applicable.
Lucas County Iowa  search
BTUnited States
 .Iowa
 ..Lucas County Iowa
SNS Iowa.
Lucas County Ohio  search
BTUnited States
 .Ohio
 ..Lucas County Ohio
NTToledo Ohio
RTOttawa River
SNNW Ohio.
Lucas Formation  search
RTCretaceous
 Cuba
 Detroit River Group
 Michigan
 Middle Devonian
 Ohio
 Ontario
SNIn Detroit River Group. Ohio, SE Michigan and Ontario. Includes Richfield Member. Also a Cretaceous formation in Cuba. Indexed with ages as applicable. Added to Thesaurus in 1989.
Lucca Italy  search
BTEurope
 .Southern Europe
 ..Italy
 ...Tuscany Italy
 ....Lucca Italy
SNCity and province in central Italy.
Luce County Michigan  search
BTUnited States
 .Michigan
 ..Michigan Upper Peninsula
 ...Luce County Michigan
Lucern Switzerland  search
USELucerne Switzerland
Lucerne Switzerland  search
BTEurope
 .Central Europe
 ..Switzerland
 ...Lucerne Switzerland
UFLucern Switzerland
SNCanton in N central Switzerland. Also a city.
Lucinidae  search
BTInvertebrata
 .Mollusca
 ..Bivalvia
 ...Lucinidae
SNFamily.
Luderitz Namibia  search
BTAfrica
 .Southern Africa
 ..Namibia
 ...Luderitz Namibia
SNTown in SW Namibia. Formerly Angra Pequena.
Ludfordian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Silurian
 ....Ludlow
 .....Ludfordian
Ludian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Eocene
 .....upper Eocene
 ......Ludian
RTPriabonian
SNEurope. Above Bartonian, below Tongrian (Oligocene).
Ludlovian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Silurian
 ....Upper Silurian
 .....Ludlovian
SNEurope. Above Wenlockian, below Gedinnian (Devonian).
Ludlow  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Silurian
 ....Ludlow
NTGorstian
 Ludfordian
Ludlow Member  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Paleocene
 .....Ludlow Member
RTMontana
 North Dakota
 South Dakota
 Fort Union Formation
SNIn Fort Union Formation. NW and N South Dakota, NE Montana and SW North Dakota. Added to Thesaurus in 1989.
Ludlowville Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Middle Devonian
 .....Ludlowville Formation
RTNew York
 Hamilton Group
SNIn Hamilton Group. W and central New York. Includes Ledyard Shale Member; Wanakah Member. Added to Thesaurus in 1989.
ludwigite  search
BTborates
 .ludwigite
Lufeng China  search
BTAsia
 .Far East
 ..China
 ...Yunnan China
 ....Lufeng China
SNTown in central Yunnan, SW China.
Lugo Spain  search
BTEurope
 .Southern Europe
 ..Iberian Peninsula
 ...Spain
 ....Galicia Spain
 .....Lugo Spain
SNProvince in NW Spain.
Luisian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Miocene
 .....middle Miocene
 ......Luisian
SNNorth America. Middle Miocene, above Relizian and below Mohnian. Added to Thesaurus in 1985.
lujavrite  search
BTigneous rocks
 .plutonic rocks
 ..syenites
 ...lujavrite
RTnepheline syenite
Lukov Poland  search
USELukow Poland
Lukow Poland  search
BTEurope
 .Central Europe
 ..Poland
 ...Lublin Poland
 ....Lukow Poland
UFLukov Poland
SNTown in E Poland.
Lukuga River valley  search
BTAfrica
 .Central Africa
 ..Congo Democratic Republic
 ...Shaba Congo Democratic Republic
 ....Lukuga River valley
SNE Congo Democratic Republic.
luminance  search
USEbrightness
luminescence  search
UFphosphorescence
RTgeochemistry
 Moon
 brightness
 cathodoluminescence
 electromagnetic radiation
 fluorescence
 photochemistry
 thermoluminescence
 X-ray fluorescence
 Fraunhofer line discriminators
luminescence analysis  search
USEfluorimetry
Lumpkin County Georgia  search
BTUnited States
 .Georgia
 ..Lumpkin County Georgia
Luna 16  search
BTLuna Program
 .Luna 16
RTMoon
 remote sensing
Luna 20  search
BTLuna Program
 .Luna 20
RTMoon
 remote sensing
Luna 24  search
BTLuna Program
 .Luna 24
RTMoon
 remote sensing
SNAdded to Thesaurus in 1981.
Luna 9  search
BTLuna Program
 .Luna 9
RTMoon
 remote sensing
SNAdded to Thesaurus in 1989.
Luna County New Mexico  search
BTUnited States
 .New Mexico
 ..Luna County New Mexico
NTFlorida Mountains
SNSW New Mexico.
Luna Program  search
NTLuna 16
 Luna 20
 Luna 24
 Luna 9
RTextraterrestrial geology
 Moon
 planetology
 remote sensing
SNAdded to Thesaurus in 1981.
Lunae Planum  search
BTMars
 .Lunae Planum
RTKasei Vallis
SNLarge plateau on Mars. Added to Thesaurus in 1985.
lunar bases  search
RTexploration
 extraterrestrial geology
 landing sites
 Moon
 observations
SNAdded to Thesaurus in 1989.
lunar breccia  search
RTbreccia
 lunar samples
 Moon
SNBefore 1981, also search Moon AND breccia. Added to Thesaurus in 1981.
lunar craters  search
RTcraters
 Moon
 wrinkle ridges
SNBefore 1981, search Moon AND craters. Added to Thesaurus in 1981.
lunar crust  search
RTcrust
 lunar samples
 Moon
SNBefore 1981, also search Moon AND crust. Added to Thesaurus in 1981.
lunar highlands  search
RThighlands
 Moon
 wrinkle ridges
SNAlso search highlands AND Moon. Added to Thesaurus in 1993.
lunar interior  search
RTinterior
 Moon
 planetary interiors
SNBefore 1981, also search Moon AND interior. Added to Thesaurus in 1981.
lunar laser ranging  search
RTgeodesy
 geophysical methods
 geophysical surveys
 laser methods
 laser ranging
 Moon
 remote sensing
SNBefore 1993, also search laser ranging. Added to Thesaurus in 1993.
lunar mantle  search
RTmantle
 Moon
SNBefore 1981, also search Moon AND mantle. Added to Thesaurus in 1981.
lunar meteorites  search
BTmeteorites
 .stony meteorites
 ..achondrites
 ...lunar meteorites
RTMoon
 Elephant Moraine Meteorites
 Allan Hills Meteorites
 ALHA 81005
 EET 87521
 MAC 88104
 MAC 88105
 MacAlpine Hills Meteorites
 Queen Alexandra Range Meteorites
SNMeteorites which are thought to originate from the Moon. Before 1995, also search meteorites AND Moon. Also index Moon. Added to Thesaurus in 1995.
lunar rocks  search
USElunar samples
lunar samples  search
UFlunar rocks
RTMoon
 lunar breccia
 samples
 lunar soils
 lunar crust
lunar soils  search
RTfine-grained materials
 lunar samples
 Moon
 soils
SNBefore 1981, also search Moon AND soils.
Lund Sweden  search
BTEurope
 .Western Europe
 ..Scandinavia
 ...Sweden
 ....Malmohus Sweden
 .....Lund Sweden
SNCity in extreme S Sweden.
Lunenburg County Nova Scotia  search
BTCanada
 .Eastern Canada
 ..Maritime Provinces
 ...Nova Scotia
 ....Lunenburg County Nova Scotia
Lunenburg County Virginia  search
BTUnited States
 .Virginia
 ..Lunenburg County Virginia
Luning Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Triassic
 ....Upper Triassic
 .....Luning Formation
RTNevada
SNSW Nevada. Added to Thesaurus in 1985.
Luoquan Formation  search
BTChronostratigraphic Units
 .Precambrian
 ..Luoquan Formation
RTChina
 Henan China
 Sichuan China
 Shaanxi China
 Yunnan China
SNLocated in Henan, Shaanxi, Sichuan and Yunnan provinces. Added to Thesaurus in 1989.
Lupin Mine  search
BTCanada
 .Western Canada
 ..Mackenzie District Northwest Territories
 ...Lupin Mine
RTmines
 gold ores
SNGold ores. E Mackenzie District, Northwest Territories. This term has multiple hierarchies. Added to Thesaurus in 1989.
Lusaka Zambia  search
BTAfrica
 .East Africa
 ..Zambia
 ...Lusaka Zambia
SNCity in central Zambia.
Lusatia  search
BTEurope
 .Lusatia
UFLausitz
RTGermany
 Poland
 Upper Lusatia
 Lower Lusatia
SNRegion in E Germany, and in SW Poland. It comprises both Lower Lusatia and Upper Lusatia. Indexed with countries as applicable.
Lush's Bight Group  search
USELushs Bight Group
Lushs Bight Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Lushs Bight Group
UFLush's Bight Group
RTNewfoundland Island
Lusitanian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Jurassic
 ....Upper Jurassic
 .....Lusitanian
RTMalm
 Rauracian
SNEurope. Above Oxfordian, below Kimmeridgian.
LUST  search
USEleaking underground storage tanks
Lut Desert  search
BTAsia
 .Middle East
 ..Iran
 ...Lut Desert
UFDasht-e-Lut Basin
 Dasht-i-Lut
SNGreat sandy and stony desert in E central Iran.
Lutetian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Eocene
 .....Lutetian
SNEurope. Above Cuisian, below Auversian.
lutetium  search
BTmetals
 .rare earths
 ..lutetium
UFLu
RTLu/Hf
Lutzow-Holm Bay  search
BTAntarctica
 .Lutzow-Holm Bay
UFLutzow-Holmbukta
RTQueen Maud Land
 East Ongul Island
 Prince Olav Coast
 Syowa Station
SNBetween Prince Olav Coast and Prince Harald Coast in Queen Maud Land of the Norwegian Sector.
Lutzow-Holmbukta  search
USELutzow-Holm Bay
Luvisols  search
BTsoils
 .Luvisols
RTsoil group
Luxembourg  search
BTEurope
 .Western Europe
 ..Luxembourg
RTArdennes
 Rhenish Schiefergebirge
 Luxembourg Sandstone
 Moselle River
 Moselle Valley
Luxembourg Belgium  search
BTEurope
 .Western Europe
 ..Belgium
 ...Luxembourg Belgium
NTBastogne Belgium
RTArdennes
SNProvince in S Belgium.
Luxembourg Sandstone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Jurassic
 ....Lower Jurassic
 .....Luxembourg Sandstone
RTBelgium
 Luxembourg
SNHettangian and Sinemurian. Also called Hettange Sandstone or Orval Sandstone.
Luzerne County Pennsylvania  search
BTUnited States
 .Pennsylvania
 ..Luzerne County Pennsylvania
SNE central Pennsylvania.
Luzon  search
BTAsia
 .Far East
 ..Philippine Islands
 ...Luzon
NTBataan Philippine Islands
 Bondoc Peninsula
 Camarines Norte Philippine Islands
 Mayon
 Mount Pinatubo
 Taal
RTLuzon earthquake 1990
 Sierra Madre
 Zambales Ophiolite
SNNorthernmost and most important island.
Luzon earthquake 1990  search
BTearthquakes
 .Luzon earthquake 1990
UFPhilippine Islands earthquake 1990
 Phillipines earthquake 1990
RTPhilippine Islands
 Luzon
SNEpicenter in E Luzon, NE Philippine Islands. Also search Philippine earthquake 1990. Added to Thesaurus in 1995.
luzonite  search
BTsulfosalts
 .sulfantimonites
 ..luzonite
BTsulfosalts
 .sulfarsenites
 ..luzonite
RTcopper minerals
 famatinite
SNThis term has multiple hierarchies.